读东半球示意图,甲地的纬度是0°,经度为( )
A:110°E
B:90°W
C:70°E
D:90°E
15-8=____
44+9=____
50+8=____
20+3=____
9+20=____
58-8=____
8+80=____
1+70=____
45+8=____
3+70=____
5+30=____
85-80=____
9+7=____
70+8=____
14-8=____
— Can you tell the difference between these two pictures?
— Difference? Oh, no. They look quite .